Home / 1,124,020.25-1,551,187.40-640,507.35

Finding the Fourth Proportional to 1,124,020.25, 1,551,187.40 and 640,507.35

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Solution

The fourth proportional to 1,124,020.25, 1,551,187.40 and 640,507.35 is: 883,922.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,124,020.25 : 1,551,187.40 = 640,507.35 : x
  2. Step 2: Convert to fraction form
    1,124,020.25/1,551,187.40 = 640,507.35/x
  3. Step 3: Cross multiply
    1,124,020.25x = 1,551,187.40 × 640,507.35
  4. Step 4: Simplify right side
    1,124,020.25x = 993,546,930,927.39
  5. Step 5: Solve for x
    x = 993,546,930,927.39/1,124,020.25
  6. Step 6: Final answer
    x = 883,922.63

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.